Telephone apparatus.



PATBNTED Nov. 27, 1906.

No'l 836,848.'

n.5. WILSON-. LEPEQNE Mmmm APPLGATOH FILED DECLB. 1902.

MN. .mw

Una/mn.

NETE@ DAVID H. WILSON, 0F CHYCAGG,

.specification of Letters .Patent Patented. lll'ov': 27,

Application filati December 8, 1902. Serial lilo. 13%,26L

To @ZZ whom 1,1; may concern: Be it known that I, 'Davila citizen of theUnited States, r

cago, in the county of Cook and o Witsen, a at Ch1- sate oir Illinois,have invented a certain and .useful Improvement in Telephone Apparatus,of which the following is a speciiication.

My invention relates to telephone apparatus, and has for its object toprovide a new and improved construction of this description.

Myinvention is illustrated in the accompanying drawings, wherein- Figure1 1s a plan View of a combined inductlon-coil and receiver embodying myinvention. Fig, 2 is a section on line 2 2 of Fig. 1. Fig. 3 is asection on line 3 3 ci Fig.

two ends are brought into proximity to each other, said ends beingseparated'by the space A. (See Figs. 1 and 3.) This core is providedwith suitable coils B and C of any suit able description. As hereinshown, each of these coils has a primary winding and a secondar winding.The core oi the inductioncoil w en laminated maybe made up in anydesired manner. As herein shown, it is made ulp of alternate layers,each consisting of t ree pieces, one layer, ior example, consistirig ofthe three pieces A2, A, and A". (Sh own in Figs. 5 and 8.) T he lowerends of the pieces A2 and A3 rest upon the top ed ge of A". The nextlayer will be made up olf the pieces A5, A, and A7, (shown in Figs. 6and 9,) the piece A7 fitting in between the lower ends ol' the pieces A5and A, Each of the pieces A, A, A, and i have the projecting pole-piecesD and D. When the coil is entirely pulled up with the coils in positionand itis made iu these separable pieces, so that the coils can beproperly placed, a combined frame consisting of' the pieces E and it",Figs. 7 and 10, is fastened to each side ol' the core, the 'whole beingbound. together by bolts or rods or the like passing through the holesat the corners. Thdparts E and E are of non-magnetic ma terial, and theyof course might be dispensed With. A telephone-receiver is associatedwith the pole-pieces l) and D', as shown in Fig. 3, yso that thediaphragm thcreol' is actuated by these pole-pieces. The pole-pieces maybe used alone, or they may he provided with the coils DE and i233,connected in circuit with the secondary coil el the transl'o ner, Thereceiver may be oi any of the ordinary constructions and may he providedwith. an earpiece l, connected thereto in any suitable manner, as by aliexibie tube it". Asso-- ciated with the inductioibcoil is aspringcontact G, which extends over the opening formed between theopposed ends ol' the core, said contact being connected with bindingnpost G', by means of W` ch it is connected in circuit. A coperaticontact G2 assoW ciated therewith and corniected wit an arm G3,attached, to the core by the insuiating0- piece G4, saidarm beingconnected ii; circuit,

by means oi the conductor G in Fig. 4r have shown 'if coil conected incircuit with the tiansmi H ad a source of electric supply H, being acirc.lit-controlling switch H2 :tor cutting the transmitter in and outci' circuit. There is also a ringing-switch H5. l/Vhen it is desired toring up, the ringing-switch H5 closed, This completes thc circuitthrough the primary coil, so as to enc-rice itscore. 'lhc spring-contactG is then attracted to break the circuit at the Contact t. The coro isthen deniagnetized and@ thc sprllig-contact released, so as to againcomplete the circuit. The impulse is thus sont out over the line throughthe secondary coil, so as to ring the bell or signal device at the otherend, corresponding to the signaling device l. (illustrated in Fig. et.)This signaling device is ceunected across the main line, and the circuittherethrough is controlled by contacts associated with thecontrolling-switch H2, so that when the receiver is in position thecircuit is completed and when the vreceiver' is rcinoved thecontrolling-switch is moved so as to open the circuit. The variouscontacts connected with the controlling-switch H2 are insulated fromeach other in any suitable manner. This continues until the switch ll5is opened.

IOO

When the part H2 is moved op, so that the contacts H3 oud H" aretogether, the trans-- mittel' is in circuit. The ringing-switch H5 andthe spring-contact or circuit-breaker G are connected in porofilrelwiththc transmitter. it will he seen that i 4'inve here e (mostruotionwherein on inditerroir-coil, o, telephonercceiver, on d o signalingcircuit :risking :md breaking device combined 'n o singio iostrurientand actuated trom t oustruo necessary for the induction-coil clone. "i:Wiil also he secu hat imvvo here :i completo instrument oder) d to hopleo i io the cir-- cuit and to pi-norm ell thcsc turious.touctions wheni proper p i sitimr i have described io dotar-il :t porticoiorcorrstructioo; out it is oi" com, i evident tlm-t the parts may hegreatly vor in toro), coostructiori, and arrangement and r ist somo ofthe ports may he omitted and others used with ports not herein shownwithout di mrting from the spirit of my inten tion. i. l fore do notlimit myself to thoI particule struction sud arrangement showin.

The use and operation ci" my' inw, Ltion ore es follows: When it isdesir` to coi! op, the ringinv-switch Hf is prosM to, plete the circuitthrough the i U the primary. coil oi thc iuductirm-m,il. Tl. e coro of si, coil their energized end attracts the sprm -coiitoct so :is to broekthc circuit at G2. The con, o'i the infiltration-coil their becomesdohcrgizcd und the sprintcolitoct returns to its normal oomlitii Thecifrcuit is then rigidi; completed. :rod i. operation is (motionedA,lhci polsrs secondary coil are their sont out tipo line and set inoperation the signaling d- Vice I et the other end thereof, .ihc coitrolling-switch Iii is thon iriovcd so :is to corrncct the contacts iisind ii* i l disconr. tho contacts io the `cir 't of do v ic o. is theocompicted, sor-"n circuit l t lows: From tl'u;y source oi supply iii;ihr( the primary coil of the indunirsi-col, thorn to conta-ct IF, thenceto conte/'t iVA thcoce to the treiisiriitter il, ,sind hcc 1o the soirVof' supply il. The veria tions in the correa in the trousmittor-circuit,doe to the mo, ment of the diaphragm, set up en. iii/dor current in thesecondary coil of the inductioncoil, :11rd this current posses out onthe line to the 'receiver :tt the othor cod. it will he noted that at o,given stntiori there but one induction-coil, such induction-Poil heiligessociated hoth' with. thc` transomttor :md the receiver itt that'strttiim. .ln ot'zxor words, the indnotion-coil :it tlw stotirm, whichroost necessarily hf: used in connvclioo with (he transmitter, isormngrml so 'llmt it acts to litiuitc the rlooivcr Whoo thi:lrnht-:mittor :mit tho other ond oi the lino living' osi-d, Underordinati-y' conditions thi:V iodio-tionactuated tl'lcrehy, mi

coil is oxcilw'l whilo thc tolliiogr t; coing nl;

end' e different coil is used'for the receiver, and hcocethere is eloss, which is thus saved by this construction.

l ciaiml. A teieph apparatus comprising a main induction-rod mountedupon o suitable base and having its pcie-pieces brought into proximityto each other, e telephone-receiver diaphragm rountod upon saidinduction-coilziod oppositr he said. pole-pieces, the induction-coil`actif; es the basic element, said receiver boing carried and actuated bysaid indootio;li- :.oii.

A. telephone apparatus comprising en inductioncoii having itspcie-pieces brought into proximity to each other, o Y'telephonereceivirig-diaphragm associated With the opposed pcie-pieces so as to beactuated thereby, seid di pnregm mounted in en inclosing device sms, orthan and supported upon the induction-coil and en eiectromel neticcircuit making and breaking device a opted to be connected with theprimary circuit and associated with the opposed pole-pieces of the coreof the induction-coil. l

25, An induction-coil comprising a core formed so es to heve'separeted,opposed poles, im singularly-projecting pole-picco on each of seid polesond a. telephone receiving-diaphragm associated with said pole-pieces soas to he ectuoted thereby, e supporting part for said diaphragm carriedby' the core of the induction-coil. v

4f, Ari. induction-coil comprising a, core 'formed so to have separated,opposed poles, a, primary and secondary coil on said core, c projectingpole-piece on catch of' seid polos und o lclcphonc receiving-diaphragmassociated with seid )ole-pieces so as to,be actuated thereby, saidprojecting ole-pioces provided with coils connected in t o secondarycircuit of the induction-'coil 5. in induction-coil comprising zt coreformed so :is 2to have' seperated, opposed polos, e projectingpole-picco on cach of said ls end :t telephone receiving-diitphragmocioted with said vole-pieces so to be d, a circuit making and breathingdevice having e ymovable member extending over the space between, thcopposed vpoics oi tho induction-coil core.

6, An induction coil comprising a core having pole-pieces which projecttoward cri-ch other hut are separated b "a s moe, o secondary coilthereon connecte( in tlho mitin line, :t prinmry coil thereon, utransmitter connected io circuit with the primary coil, n. receivermom'ited upon und mclosinpr :t mrt'ol' said iodnotion-coilVsaidimluctioll-coil rioting :1s it huso therefor, scid rcccivvr 'formed inpart by tho seid opposed polos. 1

7. An unloctirm-coil comprising o lumismtcd voro lowing scl'mrulod.opposed polos, smid voro l'olrmd ol' n, corios of loyers oi )nutorinl,thc ports which form tho opposed polos IIO being righteangled pieces,said pieces having each an angular projecting poie which acts as a partof a telephone-receiver, said right aiigled pieces each having a coilWound thereon.

S. A telephone apparatus comprising a iiiaiii induction-coil, a Coretherefor bent around so thatx its ends are in proiziniiq to each other,a primariv coil on the core thereof,

i therewith, 'a receiver provided with a dia'- zo tion-coil. 1

10. A telephone apparatus comprisinga A inaininduction-coil having acore bent around a transmitter connected in circuit with said primarycoil,4 a seconda@v coil on the core of said induction-coil, a receii'erharing its diaphragm associated with the core on said iiiductioii-coilsoas to be actuated thereby7 said iinductioiiv-coilpi'tqectingLiterallyheyondsaid,

diaphragm whereby the main induction-coil acts both with the transmitterand the receiver tit a given station.

9. A' telephone apparatus comprising a niaiii inductioincoil, a'transmitter associated so thaty its ends are in proximity to eachother, said ends being bentsubstantiallr at right angles to the core, areceiver-diaphragm mounted opposite said ends, a casiiigviiiclosing saidrightan01ed ends and resting upon said core so as to ne supportedthereby, said casing supporting said dia hragt'n.

DAVI H. VHLSOX.

Ttitnesses: A

Entrano T. WRAY,

Homan L. Karim.

